A shiny Feebas and Wailord, both by fishing, and in Emarald 3 years ago, where there were no Dexnavs...I wish I could say that, but, I am kinda impatient guy and shiny hunting ain't for people like me. Still, I was able to chain and hunt down some shinies in OR via that awesome feature, thanks to the inventor of DexNav, or GameFreak in particular. I found a shiny Nincada, a shiny Linoone and a shiny Swablu. Thats it. Yeah, I forgot, I also found a shiny Miltank with four Tauros in a horde encounter in Y. And, I also encountered a shiny Geodude, of level 17, in Victory Road of Kanto/Jhoto in HG.